When speaking to an audience, it’s not only important that the people at the back of the room can hear our words, they need to be able to hear our voice as well.

It might sound like these two elements are one and the same thing, but they are actually different.

Our voices convey our message with a variety of nuances. There is the light and shade of our tone, the emphasis of our volume, and the indicators of our pitch. All of these attributes combine to make the voice into a rich and infinitely varied tool.

When speaking to a moderately sized group of up to 30 people, then it’s within the power of most of us to project the voice while maintaining it’s quality. As groups and rooms become larger however, that ability starts to break down.

If the opportunity arises, stand at the back of a large group of people and listen to the voice of someone presenting to them. You’ll notice that although you can probably hear what they are saying, the distance involved means the voice has become thin and drawn out, with a slightly uncomfortable echo as the speaker tries to force up the volume and reach the back of the room. All the bass notes have become lost along the way, and it’s difficult to feel any connection to the person delivering them.

At the same time, for the poor speaker, the effort of speaking at full volume is tiring them, making the voice become ever more difficult to hear.

If these presenters had the opportunity to go back in time and plan their sessions again, they would have requested a microphone. It’s a remarkably simple thing to overlook and many of us, never having heard ourselves from the back of the room, wouldn’t realize how much a large group of people can dissipate sound.

If you are being asked to speak at a venue that can hold more than thirty people, then the chances are that they will also have a sound system available. If you have a choice, use a radio microphone rather than a handheld or fixed version that will interfere with your freedom of movement. As with all aspects presentational, it’s a good idea to arrive at the venue early and have a sound check first, so that from your first words the volume is correctly set.

Many presenters are accustomed to spending time ensuring that their slides are going to be clear and visible at the back of the room. It’s equally important to ensure that our voices are too.